Spring 3.0 Java REST 返回 PDF 文档
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Spring 3.0 Java REST return PDF document
提问by Krishnan J
I have a PDF document generated in the backend. I want to return this using Spring MVC REST framework. What should the MarshallingView and ContentNegotiatingViewResolver look like?
我在后端生成了一个 PDF 文档。我想使用 Spring MVC REST 框架返回它。MarshallingView 和 ContentNegotiatingViewResolver 应该是什么样的？
Based on a sample I found, the controller would have this as the return:
根据我发现的一个示例，控制器会将其作为返回值：
return new ModelAndView(XML_VIEW_NAME, "object",
byteArrayResponseContainingThePDFDocument);
-thank you.
-谢谢。
回答by Biju Kunjummen
You can define your method to take in explicit HttpServletRequestand HttpServletResponseand stream to the HttpServletResponse directly, this way:
你可以定义你的方法采取明确HttpServletRequest和HttpServletResponse和流直接HttpServletResponse的，是这样的：
@RequestMapping(value="/pdfmethod", produces="application/pdf")
public void pdfMethod(HttpServletRequest request, HttpServletResponse response){
response.setContentType("application/pdf");
InputStream inputStream = null;
OutputStream outputStream = null;
try{
inputStream = getInputStreamFromYourPdfFile();
outputStream = response.getOutputStream();
IOUtils.copy(inputStream, outputStream);
}catch(IOException ioException){
//Do something or propagate up..
}finally{
IOUtils.closeQuietly(inputStream);
IOUtils.closeQuietly(outputStream);
}
}
